Driving Support Apparatus Erroneous Acceleration Control
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Solution Overview
Problem
Existing driving support apparatuses face issues where priority-based control systems can lead to inappropriate execution of driving support controls, particularly when collision avoidance and acceleration suppression controls conflict, resulting in unintended cancellation of deceleration commands due to erroneous driver operations.
Innovation Solution
A driving support apparatus with multiple determinators and controllers that assess collision possibility, driver intention to accelerate, and erroneous operations, ensuring that deceleration for collision avoidance is maintained even if acceleration is suppressed, preventing cancellation of critical controls during driver errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first control (deceleration for collision avoidance) is set to have higher priority than the second control (acceleration suppression), then the collision avoidance control can be executed with priority, but the deceleration control may be inappropriately canceled when the driver makes an erroneous acceleration operation
Solution Approach 1:
The patent applies local quality by differentiating the treatment of acceleration operations based on their context. Erroneous acceleration operations (driver error) are treated differently from intentional acceleration operations. The system locally adjusts the priority relationship between controls depending on the type of acceleration detected, allowing deceleration to maintain priority during erroneous acceleration while permitting cancellation during intentional acceleration.
Solution Approach 2:
The patent implements dynamics by making the priority relationship between the first control and second control changeable rather than fixed. The priority relationship is dynamically adjusted based on the determination result of whether the acceleration operation is erroneous. This allows the system to adapt the control priority in real-time based on the driving situation and driver intent.
2Adaptability or versatility
If the second controller stops deceleration when driver acceleration intention is detected, then the system responds to driver intent, but critical deceleration control may be canceled during driver errors
Solution Approach 1:
The system applies local quality by creating different response pathways for different types of acceleration operations. When acceleration is determined to be erroneous, the deceleration control maintains priority and is not stopped. When acceleration is determined to be intentional, the deceleration control can be stopped. This localized differentiation ensures appropriate responsiveness while maintaining safety.
Solution Approach 2:
The third determinator (erroneous operation determinator) acts as an intermediary between the second determinator (acceleration intention determinator) and the second controller. It introduces an additional layer of verification that filters out erroneous operations before they can inappropriately cancel the deceleration control, while still allowing legitimate acceleration intentions to proceed.
3Device complexity
If multiple driving support controls are performed based on priority, then control conflicts can be resolved, but appropriate control execution may be prevented when priority alone is used for determination
Solution Approach 1:
The patent segments the determination process into three distinct stages: first determinator for collision possibility, second determinator for acceleration intention, and third determinator for erroneous operation detection. This segmentation allows each component to focus on a specific aspect of the control decision, improving overall reliability while maintaining a manageable system structure.
Solution Approach 2:
The third determinator serves as an intermediary layer between the basic priority-based control system and the final control execution. It introduces additional verification for acceleration operations, acting as a filter that prevents erroneous operations from inappropriately canceling deceleration control while allowing legitimate operations to proceed.
Data Source
AI summary
A driving support apparatus is provided with: a first determinator configured to determine collision possibility of a vehicle; a first controller configured to perform deceleration, on the basis of the collision possibility; a second determinator configured to determine whether or not a driver has an intention to accelerate; a second controller configured to stop the deceleration performed by the first controller, if it is determined that the driver has the intention to accelerate; a third determinator configured to determine whether or not a driving operation by the driver is a predetermined erroneous operation; a third controller configured to suppress acceleration based on the driving operation if it is determined that the driving operation is the predetermined erroneous operation; and a fourth controller configured not to allow the second controller to stop the deceleration if the acceleration is suppressed by the third controller.